Moen Flo Shutoff, 3/4" Automatic Water Leak Detector & Shutoff, 900-001 | Automatic Shutoff, Leak Detection, MicroLeak Tests, Monitors Flow, Pressure, Moisture, and Temperature, WiFi App Control

I've heard about these for a while and thought it would be a nice thing to have, but never actually bought one, until now. After our neighbor's house flooded for the second time I thought it might be a good idea to have this, since all of these houses were built by the same builder. If they're having that many problems it could be a matter of time before we do as well, as both times their house was severely damaged. I'm not a plumber but have basic skills and had no problems installing the Flo valve. I used a 2" nipple between the Flo and our water filter and a shark bite on the other side to connect into our PEX pipe that comes off the PRV. It took less than an hour to install. Setup was simple and instructions were easy to follow. It took an hour or so for it to realize that it was installed, and then took another week or so to 'learn' our usage habits. Right after installation I began getting real-time data on flow rate, pressure, temperature, and gallons used. The data is pretty cool, but historical data is extremely limited. In the app, you can only get hourly data for the current day and weekly data for the current week. On the website you can only view/download hourly data for the current and prior day, daily for current or past four weeks, and monthly for the past 12 months. We've had the Flo installed for just over two weeks now and had no problems with it. We subscribed to Flo Protect but thus far it still has not identified individual fixtures. A note on that; they say 'we need a couple weeks of data before we can identify fixtures.' I contacted support and they told me it's actually three weeks. I suggested to them that they change their messaging on that to manage expectations. I've seen quite a few people unhappy that they have to pay $5/mo for the Flo Protect plan after paying $400+ for the valve. I have no problem with paying for it. We pay $15/mo for our alarm monitoring after paying around 2k for our system to protect our home. Water can cause severe damage, so I'm good with paying $5/mo to monitor that since it's probably more likely to happen than a break in when you think about all the places plumbing could fail and the extent of damage it can cause. Sure, insurance will probably pay for most of the repairs, but as I sit here listening to them jack hammering up the hardwood floors a couple doors from me for the entire day and watch all the various work trucks coming and going, I think of the inconvenience of it all. Overall I give the system a 4 star rating because availability of historical data is quite limited and I'd like the ability to download detailed hourly or daily data for a large period of time into Excel to perform more detailed analysis. If the data was more available I'd give it a full 5 stars. Support through the water concierge chat is excellent but anything I've sent via e-mail has gone completely unanswered, so I recommend using the chat. Today I purposely left our kitchen faucet on at a trickle while I was eating lunch and they called my phone after around 30 minutes to alert me to long water duration. I also got an e-mail about it and an app notification, all of which gave me the option to turn off my water immediately or ignore it. They said if I did not respond they would shut it off in five minutes. I'm pretty sure if a pipe broke and a lot of water was flowing it would have alerted much faster, but I only left the faucet barely trickling. All things considered I think this is a great product and both it and the monitoring are worth it in my opinion. Update 3/8/2020 Usage by fixture finally became available after a little over three weeks of use and I wanted to provide some information on this. My expectations were pretty low for this feature and thus far I would say they may have just barely met them. My thoughts on this are that it would be quite difficult to isolate usage to a particular fixture, since the only data points they could use to identify fixtures would be flow rate and duration and many things could have similar flow rates, not to mention overlapping usage (i.e. you flush the toilet, then go and wash your hands, washing machine could be running while you're taking a shower, multiple people using water, etc.) That being said, it has done a fairly good job in identifying faucets, toilets, and showers/baths, but not always correctly. It has not been able to isolate anything else, such as the washing machine, dishwasher, refrigerator, etc. You do have the ability to go in and reclassify an event but I'm not certain that it learns anything from that or not. I know I changed one it got wrong from faucet to shower/bath and later I looked and it had changed it back. When you look at the event details it only provides the time, duration, and gallons used. It would be extremely helpful if it also provided the flow rate, as that is one of the most useful data points in identifying what fixture may have been using water. I plan to make that suggestion and hope they'll consider implementing it. If I can accurately reclassify events and it actually learns from that then maybe it would get more accurate over time. My overall rating and opinion of the device is unchanged and I still feel it is very useful and provides an extra layer of protection for our home. Update 4/7/2020 Upgrading my overall rating from 4 to 5 stars because they just added expanded access to historical data which was the one thing that I felt was lacking. You can now view data by day, week, month, year, and even by custom date range. Being able to view a custom range is helpful if you want to compare the Flo data to your water bill as you can set it to the same billing period.

Updated review(02/2025) My device was working fine and I was super happy about it. It sends me notifications when kids leave faucets on, or when there is too much water usage etc. After 3 years it stopped turning on-off valve remotely . I unplugged the unit and left it like that for 8 months. I finally removed the unit to inspect what was going on. I noticed that inside the unit is full of water. My unit is inside my garage so there is no way to get water from outside so I removed all the parts to see what the real cause was. Conclusion, it’s a manufacturing defect! There are 2 holes going inside the unit from the main line. One of them is to turn the valve on-off, it didn’t seem like leaking. I believe the other one is for checking if there is any leak in the line when the valve is turned off. This one seems like poorly engineered and is prone to water leak inside the unit. I was an early buyer so this problem may not repeat in the newer models. I wanted to let you know because people invest around $1000 for this device I wrote to Moen and waiting for their reply. Hopefully they can send me a new unit. Original review(2021) I bought the unit on the prime day and it was sitting on the table since. I finally got the courage to install it. I never worked with copper pipes in my life before, so the soldering a copper pipe wasn’t an option. That’s why I bought push-to-connect fittings to install the unit which was very straightforward. I found the main water line on the wall of my garage and cut the drywall open. You need around 20in work area to get it installed easily. The pipe also needs to be a little loose, so that you can push the fittings easily. I made a bigger hole on the stud to loosen the pipe. I left the wall open in case of a leak in the future Edit: I also added ground-wire jumper since the unit and the fittings are not conductive.

I've been in the homeowners insurance industry for 18 years now. I know the devastation that water damage can cause. After finding out about this device from a few of my companies (and a few of those even give discounts on insurance for having the device installed), I, my parents, and one of my business partners decided to give it a shot and have the device installed on our homes. I definitely wouldn't say it was an easy process. While most of the instructional videos on YouTube indicated that the device should be installed at the supply line to the water heater (located in our garages) were all told by our plumbers that the device should actually be installed outside on the main water line because there it would be able to monitor the entire water supply to the house and not just to the water heater and plumbing fixtures fed by the water heater, which made sense. Installing it outside, however, also required an electrician to install a waterproof junction box for the power supply to the device. Between the cost of the Flo, the plumber, and electrician, it ran about $1200. This is where the fun began. After the plumber installed the device, it would not connect to my Wifi. The connection button on the device did not work. As there was no other way to connect it to my Wifi, I contacted Moen's tech support. They advised me to buy a new device and return the defective one. After some back and forth with them over the cost of the plumber now having to come back out, un-install, and re-install the device, Moen agreed to send out one of their preferred plumbers at their cost. After it was installed, it worked perfectly. When the device is first installed and the app is learning your water usage, there are definitely 'growing pains'. If you take a shower longer than 5-10 minutes or if the device learns you take your showers around the same time every day, taking a shower during a different time will trigger the app to think there's a leak. You'll then get a message on the app, an email, and an automated phone call from Moen saying they've detected abnormal use and your water will automatically shut off in 5 minutes if the notification on the app isn't cleared. I've recommended the Flo to a number of my clients who have all said the same complaint about the device shutting the water off while showering. Anyways, for the 2.5 years I've had the device installed, it's worked great. This brings me to the present day. Each week, the app sends a notification of weekly water use. Two weeks ago, it said it didn't register any water use. I thought it was odd, but figured it was an error. This week, I received the same notification, so I contacted Moen. I was told that this likely means the turbine inside the device that reads the water flow is clogged with debris and that it's as simple as removing the device and flushing it out. I'm not handy enough to do my own plumbing work and even if I was, there's no way in hell I'd be messing around with my own water main. I called the plumber who Moen had sent out to do the first replacement and was told they only do installs and do not do service on existing devices. I called a few other local plumbers and was told the same thing. I called Moen back and they sent me a link to all of their recommended plumbers. I'm located in South Florida. Between Jupiter and South Miami, their list has 25 plumbers. The first 22 that I called all said the same thing as the first plumber. It wasn't until the 23rd who said that they would try -- it could be debris in the turbine, but he's also seen the turbine blades break due to water pressure -- so he can't guarantee a fix. This is when I took to trusty Twitter to @Moen. Their first response was again for me to me to remove the device and flush it myself, which I'm not doing myself, Their second response was to send me that same list of plumbers. That's when I called Moen back and was told that I should buy a new device and then send Moen the receipt from the original device and they'll reimburse me. The problem with that is 2.5 years ago, I paid around $400 for the device. As of April 2022, you can't find this device ANYWHERE and third-party sellers on Amazon are price gouging for between $800 and $1400, and Moen would only reimburse me for the original price paid. I went back to Twitter, this is when I finally got help. They asked if they could contact me directly, to which I obliged. They said that if the plumber cannot fix the issue to call them back and they'll send me a replacement device under warranty (but I'll still have to pay for the plumber). At this point, I think this is the best I'm going to do. In the end, caveat emptor. The device isn't cheap (especially as of April 2022). The installation isn't cheap, unless you're one of those super handy people who can do it yourself. If something goes wrong with the device, you're going to have to pay for a plumber again... if you can find one to service an existing device. Moen's product support, after a bit of pushing, is very helpful and they do stand behind their product. Even with these costs and hassles, the benefits of the device do outweigh the stress and costs of having a pipe burst and your house flood. Just know what you're getting yourself into. -------- **UPDATE** Now, 14 months later, my app started giving notification that my water pressure is low. I tested all my faucets, and it's fine, so I called tech support. They ran their tests and determined it's a bad sensor inside the device that's just not reading pressure anymore, so here we go again! They've sent me yet another replacement device, and it's great that they stand behind their product... but I still have to spend hundreds of dollars to get a plumber out to replace it. Now, two years in a row... ridiculous. ---------- **ANOTHER UPDATE** A few months ago, i got the same low-pressure warning again. Again, with a call to Moen, they sent me a replacement. I had the plumber come out again -- again spent hundreds of dollars to replace it. This time, despite Moen's written promises to reimburse me for the cost, I keep getting the classic "the check is in the mail" response. Meanwhile, last month, I got a call from my mother in a panic. Her Flo app was telling her that there was a major leak somewhere in the house. She was running around the house checking sinks, showers, toilets, hoses, water heaters, refrigerator lines... there's no water anywhere. She called a plumber who came out to perform a leak inspection. Over $500 later, it was determined there was no leak and it was, you guessed it, another faulty Flo device. Exasperated, she had the plumber remove the device from her home. I will be doing the same when (not if, but definitely when) the device fails on my home next. THIS DEVICE IS A MESS AND SHOULD NEVER HAVE BEEN RELEASED FOR SALE WITH *SO* MANY FAULTS.

I was excited to have this installed, and it has exceeded my expectations. The biggest benefit for me is the peace of mind it provides. Whether we're away for the weekend or on a longer trip, it's reassuring to know that our home's water system is being monitored 24/7 and that the valve can automatically shut off the water if a leak is detected. The app makes it easy to keep an eye on everything, and I like being able to check the status of my home's water system from anywhere. It's one of those products you hope you never actually need, but if it prevents even one major water leak, it will have paid for itself many times over. An unexpected bonus was that my homeowner's insurance company gave me a 15% discount after the installation, which helps offset the cost of the unit over time. The installation was handled by a plumber, and once it was in place, setup was straightforward. Overall, this is a high-quality smart home upgrade that adds real value and protection. I highly recommend it to any homeowner looking to safeguard their home from water damage.

I installed the Moen Flo 1-inch Smart Water Shut Off Valve as part of a broader effort to monitor and protect my home’s plumbing system, and it has been one of the more useful smart-home upgrades I’ve made. The ability to monitor water usage, detect abnormal flow patterns, and automatically shut off the water supply during suspected leaks adds a level of protection that standard leak sensors alone simply can’t provide. The app setup and Wi-Fi connectivity were straightforward, and once configured, the system provides detailed usage information that’s actually useful rather than just novelty data. I’ve been able to identify running fixtures, small leaks, and unusual water consumption patterns that otherwise would have gone unnoticed. The automatic shutoff feature also provides peace of mind when away from home for extended periods. One thing to understand is that proper configuration matters. Sensitivity and fixture settings may require some adjustment depending on your plumbing setup and appliances, especially for systems like water softeners or long-duration water usage. Once dialed in correctly, though, the system becomes much more reliable and avoids unnecessary nuisance shutoffs. Overall, this feels less like a gadget and more like genuine infrastructure protection for the home.

UPDATED UPDATE: it works. I still like the device but the troubleshooting isn’t awesome. It kills a little bit of my faith in the device but that’s alright. It’s still worth the money in my eyes. UPDATE: Well, I guess it was high hopes on my part. It’s been 6 months and now the water meter has stopped reading. All of its readings now say I’m using 0 gallons of water. Yes, I’ve restarted the device. Yes, it’s still connected and online. But 🤷🏻‍♀️. There goes $400 for the device and $400 for the install down the drain. After three separate very expensive incidents (winter pipe burst, sump pump failure resulting in a basement flood, and a $700 water bill from a leaky toilet) I've learned that it's best to just put in money to prevent rather than fix. This is where the smart water meter comes in. I bought this water meter to: 1) be able to turn off my water remotely (so I don't have to climb into the crawl space underneath the house) when I'm out of town for peace of mind. 2) monitor (and/or limit water usage) and 3) MOST IMPORTANTLY get notifications if there's a leak somewhere in the house. A running toilet can consume 250 gallons an hour. That's 42,000 gallons a week, and almost 200k gallons a month. In other words, don't wait until your receive a water bill in the thousands before finding out you have a running toilet downstairs. Now pragmatically - I did need to have it installed by a plumber, and the reviews are accurate - it is a B*TCH to connect. I have worked in tech for 20yrs, I can do this stuff in my sleep and it was still annoying. Its not just you, It's definitely the software, just be patient and it will work. To connect it: 1) once the plumber installs it, it has to be plugged in. You may need an extension cord and hope there's power in your crawl space or wherever your water meter is. 2) download the app (QR code provided) and answer many many questions (that your plumber may need to help you with) 3) climb into the crawl space to press the button on the device to put it into pairing mode and then connect your phone to the "wifi" emitted from the smart water meter. (Another QR code provided here). Here's the catch, if you're in a crawl space - your signal may not be strong enough to connect back to your main wifi and you may not have a cell signal. That's where half of the problem is. Just keep repeating the process until it eventually works. Realistically, just the app setup and device testing took me about 30mins. BE PATIENT!! It will be hard and annoying when it doesn't work like it's supposed to, but you'll get there eventually. Once it IS connected, the app is pretty cool. I had a faucet turned on and then turned off the water to the house with one button push on my phone to test. I highly highly recommend this device. It is an investment, but can easily save you THOUSANDS of dollars preventing one single incident. I will be installing one in every new home I own from now on.

Okay, I did a ton of research to find the best water/leak detection system available today. I finally decided to try Flo by Moen, because it had great reviews on everything I could find about Flo. I’m an engineer and I’m very particular about what I buy and I look for mainly quality but also price. I’m also very into smart devices (lights, alarm system, and yes, water leak sensors), but I wanted a whole home leak detection system and auto shutoff! Water damage sucks and we have known many families who came home after being away to find water flowing out the front door and then months of repair and living in hotels, insurance claims, etc. It’s 2020 and it’s about time there is something to prevent disasters! Okay, enough of what you already know... Flo arrived yesterday from Amazon (Friday) and I woke up this morning wanting to install it. Pre-Installation: You know a product is gonna be good when it arrives and the packaging is nice and has clear instructions. Well, I opened the box and the instructions were easy, setting up and account with the app (I use an iPhone) and the app is excellent. Easy setup with the Flo device, WiFi and Flo App. Installation: I thought about installing it myself, but I’m not crazy about working on plumbing. I decided to hire Dutton Plumbing and I called them at 9am and they were here at 11am. I won’t give prices here because I’m not reviewing the plumbing company (although they did a great job and also raved about Flo by Moen). Fair price for a great job and peace of mind that it’s installed perfectly. See pictures. 30 minutes or so later and they were done. They even hung around and helped with app to ensure Flo operation from the app was good. Post Installation: The plumbers left and I started noticing the water pressure increasing... 80,90,100... at 108psi I shutoff the water with Flo and turned off the main city valve. I turned the water on again and the pressure went up again.. see picture showing 83psi... but it was still going up again (I didn’t get a screenshot at 108, but I was so freaked out I didn’t get a screenshot). Anyhow, I suspected I had a bad water pressure regulator because the faucets have been spraying to hard when turned on. I went to a local plumbing supply and got a new regulator and replaced it in 10 minutes. Turned water on and now the pressure is a steady 50psi (or thereabouts) and nice and normal! So, Flo already identified a HUGE issue and now it’s resolved! Crisis averted! I’m super happy with it so far and the app is stellar good! Summary: It’s working and I’m happy to see such a quality device / App combo work so well and this is now by far the smartest and most useful smart device in the house. Support: I did not rate the support because I’ve not need to contact support yet. However, the website and app support pages look good and full of information. Protection Plan: There is $5/month protection plan and I’m on the free 30 days. So, I’m not going to review that portion of the service yet. The next day I woke up at 6am and noticed that 93 gallons of water were used since midnight! I see the water come on every 4 minutes for 5-10 seconds or so... found a toilet that was running (with a leaky flapper valve) wasting water! I shut off the toilet and fixed went to Home Depot for parts and fixed it. Flo saved me again! I don’t usually rave about a product, but I have to say this thing is great! Just to note, Flo did not alert me that there was a toilet wasting water, I just noticed the number of gallons used was 93 since midnight. Flo is still in “learning mode” while learning the habits of the house water usage, it takes 7-10 days before Flo will become able to auto shutoff and leak send alerts. For more info on leaning mode search the web for Flo by Moen and learning mode.

We were forced into buying a water leak detector by our Insurance Company Farmer's, otherwise would be at risk of being declined home insurance. We were advised to get this specific product, they apparently have agreements with Moen for purchase and then installation at supposedly lower rates. Had to show proof of installation. Since this has been in, we've had only false alarms accompanied by water shut offs, along with two actual small leaks in which it failed to detect anything. The device is completely useless and is an impingement on enjoyment of the home. Anytime you use water out of a regular pattern, it notifies you of abnormality and then shuts off the water. I've had the water shut off now three times while I'm in the shower with it noting abnormal activity for the time of day. Imagine that. You go to take a shower, but because it's not your usual time for that activity, it detects abnormality and shuts off your water right in the middle of your shower. How are you notified? Through text, email, and phone call. Who brings their phone into the shower with them? There's no way to adjust for this except to go back to the beginning and do what they call a restart which for 10 days you have to teach your device all the patterns. Moen themselves suggested that during those 10 days you just leave the water running uninhibited so that your device learns a high water usage and won't go off. I did it in the beginning. Who can do that now? It's winter time and raining. And I'm going to let my water flow freely so it can supposedly learn that water should be used during these hours? It's an unpleasant and quite frankly useless addition to the home. I regret having purchased this quality of device, and should have just bought the cheapest device out there and had it installed to satisfy insurance needs. Extensive reading of reviews also discussed this device giving out in 2 to 5 years, and I discussed this with Moen and they admit that it could be a 2-year device only. This is a racket. I paid close to $2,000 together with the device and installation. The app is difficult and doesn't allow you to easily turn back on your water. Just last night when I had noticed the phone call at 11:30pm, after having gotten out of the shower, I tried to cancel the shut off, it's in an in between mode where you can't do anything with the app. The dial is spinning. There's no one to call and nothing to do about your app trying to figure out what it's supposed to be doing. Your other option is to go outside and do a manual turn on. Twice, when we had a small drip leak from a refrigerator line and then under the sink after a Workman had damaged these, 5 days of slow drip, the app was detecting it but decided not to notify me because the settings weren't on sensitive. That was the explanation from Moen. They advised me to turn all my sensitivities up to the highest level. I did that and then I started receiving notifications and warnings of impending shut off for every little thing. Then Moen just told me to lower the sensitivities back down. So again, if I have a slow drip, it's not going to notify me. I talked to them about using water during a non-usual times, like taking a shower, and their answer is simply there's nothing to do about it except do a restart. Our home was repiped with copper just about 22 years ago, 2 years past the deadline for which the insurance company says they will waive requiring the device. Just a bunch of hassles and one more thing to do in your home and be stressed out over. Difficult app, difficult device, doesn't do much smart thinking except what's programmed into it on a very basic level. Difficult customer service with Moen. Not recommended.

No entiendo como venden un producto que no se puede utilizar en México (donde se compro), la app no esta disponible en la AppStore, ni en PlayStore. Compre dos y los instale después de la ventana de devolución, no cometan el error de comprarlo.

The installation was easy, although I'd recommend having a plumber do it. It required some modification of the waterline coming through our foundation. Since purchase (over a year ago) it has shut off our water several times when taps were left running, during a toilet valve failure, and a leak in the auto sprinkler system. It has also turned the water off in situations like running a power washer on the driveway. But it sends a message before shutting off the water, so you have time to stop it. And this gives you the comfort of knowing that it's doing its job. Highly recommended.

Installed this not the first time. Always satisfied

This thing is junk Sold on UK Amazon platform and isnt supported in UK Cant hook up to wifi Came with EU two pin plug Powered it up, had a shower, it blew shower cartridge seals and airlocked the water pump as a consequence Had to de energise and manually leave in open position How can i return it if its installed!! I want a refund

Having recently experience a plumbing flood, this product is exactly what I needed. Provides me with the security that I will be much less likely to experience another plumbing failure that will result n significant damage. Unit works as promised and the cell phone app is very useful. Expensive and requires a plumber to install but I do get a small discount on my insurance policy premium. Highly recommended!